To determine if 1860 is a prime number or a composite number, we simply look at the factors for 1860.
If the factors of 1860 are only 1860 and 1, then we know that 1860 is a prime number. Otherwise, 1860 is a composite number.
To explain better, if 1860 is only divisible by 1 and 1860, then it is a prime number, and if 1860 is divisible by more than 1860 and 1, then it is a composite number.
The factors of 1860 are as follows:
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860
Therefore, since 1860 is divisible by more than one and itself, the answer to the
question "Is 1860 prime or composite?" is highlighted in blue below.
composite
Is 1861 prime or composite?
OK. Now you know that 1860 is a composite number. Use our logic above and see if
you can figure out if the next number on our list is prime or composite before you check your answer.
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